CN106758839A - A kind of strutting system and its installation method of the cast-in-place segmental construction of pier top - Google Patents

A kind of strutting system and its installation method of the cast-in-place segmental construction of pier top Download PDF

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Publication number
CN106758839A
CN106758839A CN201611227416.2A CN201611227416A CN106758839A CN 106758839 A CN106758839 A CN 106758839A CN 201611227416 A CN201611227416 A CN 201611227416A CN 106758839 A CN106758839 A CN 106758839A
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CN
China
Prior art keywords
pier
sections
regulation
support
standard
Prior art date
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Application number
CN201611227416.2A
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Chinese (zh)
Inventor
石建
李太平
严鑫
蔡钦好
李立强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Railway No 2 Engineering Group Co Ltd
China Railway Hi Tech Industry Corp Ltd
China Railway Erju 4th Engineering Co Ltd
Original Assignee
China Railway Erju Co Ltd
China Railway No 2 Engineering Group Co Ltd
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Publication date
Application filed by China Railway Erju Co Ltd, China Railway No 2 Engineering Group Co Ltd filed Critical China Railway Erju Co Ltd
Priority to CN201611227416.2A priority Critical patent/CN106758839A/en
Publication of CN106758839A publication Critical patent/CN106758839A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges

Abstract

The invention discloses technical field of building construction, the strutting system and its installation method of a kind of cast-in-place segmental construction of pier top are particularly disclosed.A kind of strutting system of the cast-in-place segmental construction of pier top of the invention includes being respectively arranged in the support of Liang Dun both sides, support described in both sides is used to be fixed on cushion cap top surface, the support includes standard sections and the regulation section for adjusting support height, the standard sections is assembled in the top of regulation section, the support also includes the pier top sections for setting up template, the pier top section assembling is in the top of support, the strutting system is to rely on to set up the support that can adjust height using existing cushion cap top surface, and the support splices connection using multistage, stability is strong, it is convenient to assemble and disassemble, repeatedly can fall to use, reducing carries out backfilling of earthwork, the operations such as compacting, construction period is greatly shortened, construction cost is saved, improve economic benefit, reduce construction safety quality risk.

Description

A kind of strutting system and its installation method of the cast-in-place segmental construction of pier top
Technical field
The present invention relates to technical field of building construction, the strutting system of more particularly to a kind of cast-in-place segmental construction of pier top and its Installation method.
Background technology
Precast Concrete Segmental Bridges method is the sections in the leading precast bridge of precast plant, is being transported to scene paragraph by paragraph, with cantilever, by cross Or the mode such as progressive is lifted to precalculated position, then apply prestressing force and each sections coupled integral, finally to hang mould in the way of Cast-in-place pier top or the wet seam of span centre complete the construction method of the construction of bridge.The pier top of Precast Concrete Segmental Bridges continuous rigid frame bridge is cast-in-place Sections generally has the characteristics of structure is high, weight is big, quantity is more, during the cast-in-place segmental construction of pier top is carried out, it is necessary first to Support is set up, then formwork for placing is installed on support.
The method that tradition sets up support generally uses raft support method, but full framing system needs substantial amounts of template branch Frame, support sets up that process is very cumbersome, and placing of material phenomenon at random easily occurs, is unfavorable for civilized construction, meanwhile, It is higher to ground requirement for bearing capacity using raft support method, cure process is generally required, but, due to cushion cap top and original ground The discrepancy in elevation is larger, is constructed according to traditional raft support method, then need first to backfill cushion cap, then is compacted, hardened, operating efficiency It is relatively low, while, it is contemplated that expense is hardened in place and the later stage removes work, and construction cost is high, and the duration is more long.
The content of the invention
It is an object of the invention to:Prior art sets up branch during the cast-in-place segmental construction of pier top using raft support method , it is necessary to carry out backfilling of earthwork compacting during frame, cause work progress complicated, the construction period is long, and construction cost is high, there is provided a kind of pier top The strutting system and its installation method of cast-in-place segmental construction, the strutting system are set up for support using existing cushion cap top surface and can adjusted The support of height, and the support splices connection using multistage, stability is strong, convenient to assemble and disassemble, repeatedly can fall to use, and reducing is carried out The operations such as backfilling of earthwork pressure, are greatly shortened construction period, have saved construction cost, improve economic benefit, reduce construction peace Total quality risk.
In order to realize foregoing invention purpose, the invention provides following technical scheme:
A kind of strutting system of the cast-in-place segmental construction of pier top, including be respectively arranged in the support of Liang Dun both sides, support described in both sides For being fixed on cushion cap top surface, the support includes standard sections and the regulation section for adjusting support height, the standard knot Section is assembled in the top of regulation section, and the support also includes the pier top sections for setting up template, and the pier top section assembling is in branch The top of frame.
Using the strutting system of the cast-in-place segmental construction of Precast Concrete Segmental Bridges pier top, using existing cushion cap top surface for rely on come Support is set up, because cushion cap top surface is more smooth, and the weight of strutting system is born with enough intensity, take this branch Frame system can shorten construction period, can also save larger construction cost.
In the prior art, if using raft support method, it is necessary to carry out backfilling of earthwork, then on the basis of the earthwork of backfill Set up support.Therefore, backfilling of earthwork needs to be compacted the soil body and hardened, and work progress is more complicated, and the construction period compares It is long and uneconomical, simultaneously as the mode of this backfilling of earthwork has that fully compacting or hardness is not inadequate, easily Generation construction safety accident, and by the way of strutting system is ridden upon into cushion cap top surface, carrying reliability can be effectively improved, have Effect reduces construction safety quality risk.
Additionally, raft support method needs to use substantial amounts of falsework to set up piece by piece, need to remove piece by piece when the later stage uses Repeat and set up, tedious process is complicated, high cost, and use the strutting system of the cast-in-place segmental construction of pier top of this programme, Only need to using assembled regulation section, standard sections and pier top section respectively, when the later stage is reused, three sections of direct-assembling first Section can be assembled into the strutting system of completion, and operation is simple and convenient to operate, short construction period, and cost is extremely low, with preferable Economic worth and promotional value.
Regulation section is set, for solving the adaptation issues of support height, due to the pier top and cushion cap of each steel structure bridge bridge pier The distance between top surface is differed, when support is set up, it is necessary to highly select suitable support according to pier top to be poured Highly.Regulation section can adjust the height of support, the strutting system is reused, and during reuse, only need basis to wait to pour Pier top highly select proper height regulation section.
Preferably, from lower from being above sequentially connected, regulation section is located under support for the regulation section, standard sections and pier top sections End, and the bottom of the regulation section is provided with firm banking, the firm banking is used for and the built-in fitting connection in cushion cap top surface. Regulation section is arranged in the lower end position of support, installation and removal is all more facilitated, two supports for constituting strutting system exist When using for the first time, the independent assembly of regulation section, standard sections and pier top sections is first respectively completed outside the venue, then again by this three sections Integral assembling is used into complete support, and regulation section is arranged in into pedestal lower end, during follow-up use, need to only be pulled down simultaneously The regulation section of height adaptation is replaced by, integral hoisting can be carried out to standard sections and pier top sections, reduced dismounting and pacify The workload of dress, improves construction speed and efficiency.
In advance in cushion cap top surface bury built-in fitting, regulation section bottom set firm banking, by firm banking with The connection of built-in fitting, makes support be fixedly secured on cushion cap top surface, is prevented effectively from support and slip, mobile etc. occur in cushion cap top surface Problem, it is ensured that the firm reliability of strutting system.
Preferably, the standard sections is assembled by multiple cube frame structure in the vertical directions, described cube Body frame structure includes multiple standard purlin pieces being parallel to each other and is connect for load after the standard sections for connecting standard purlin piece, institute Standard purlin piece is stated for rectangular frame structure, it is including horizontally disposed stull and connection stull pair that load connects after the standard sections The bearing diagonal at angle, it is to be connected with standard purlin piece detachable that load connects after the standard sections.
Standard sections constitutes the major part of support, constitutes the structure type of each cube frame structure of standard sections It is identical, highly selected appropriate number of cube frame structure to carry out assembly according to pier top, this structure type is taken, can be pre- Assembly first is carried out to cube frame structure, when constructing at the scene, it is only necessary to according to actual height to cube frame structure Quantity is increased and decreased, and each cube frame structure includes multiple purlin pieces being parallel to each other, and standard knot is used between multiple purlin pieces It is to carry out detachable connection that load connects after section, constitutes cube frame structure, is conveniently installed and is supported, and dismounting It is more convenient, stull and bearing diagonal are set, the stability of cube frame structure can be increased.
Preferably, standard purlin piece is arranged in conplane steel pipe including four, and four steel pipes are end to end Rectangular frame structure is formed, diagonal muscle is there also is provided on the diagonal of the rectangular frame structure.Standard purlin piece is rectangular frame Structure, with unstability, sets diagonal muscle on the diagonal, the rectangular frame structure is had multiple triangles with stability Shape structure composition, constitutes a rectangular configuration for stabilization, and cube frame structure is formed for assembly.
Preferably, the regulation section includes multiple regulation purlin pieces being parallel to each other and the regulation section for connecting regulation purlin piece Load afterwards connects and is, regulation purlin piece is rectangular frame structure, and it is including horizontally disposed many that load connects after the regulation section Stull and many bearing diagonals for connecting stull, the stull are connected with regulation purlin piece detachable.Load connects after regulation section It is, for connecting adjacent two pieces regulation purlin piece, to be attached using stull in the top and bottom of two pieces regulation purlin piece, and in horizontal stroke Bearing diagonal is arranged between support, triangle fixed structure is formed it into, so as to improve the stability of regulation section.
Preferably, regulation purlin piece is arranged in conplane steel pipe including two, and two steel pipes are parallel to each other, Two two ends of the steel pipe correspond to concordant and are connected with horizontal bar respectively, are also associated with reinforcement between two horizontal bars, the reinforcement Muscle both sides are also respectively provided with diagonal muscle.Because regulation section is arranged in the bottom of support, it is necessary to bear the weight of whole support, Need to increase the reinforcement of regulation purlin piece and the arrangement density of diagonal muscle, steel pipe and horizontal bar constitute rectangular frame structure, reinforcement The rectangular frame structure is separated into two rectangular frame structures, is provided with the diagonal of each rectangular frame structure diagonal Muscle, horizontal bar is arranged in the frame structure of regulation purlin piece, and arranges reinforcement simultaneously, can effectively be strengthened regulation purlin piece and be born load Ability so that when adjust purlin piece constitute regulation section after, with more stable structure, the weight of whole support can be carried.
Preferably, the pier top sections includes multiple pier top purlin pieces being parallel to each other and the pier top for connecting pier top purlin piece Load connects and is after sections, and pier top purlin piece is inverted right-angled trapezium frame structure, and it is difference cloth that load connects after pier top sections Pier top purlin piece top and bottom two ends are placed in, often to hold load after the pier top sections to connect be including horizontally disposed stull and is used for The bearing diagonal of stull is connected, it is that detachable is connected between the piece of pier top purlin that load connects after the pier top sections.After pier top sections It is that, for connecting adjacent two pieces pier top purlin piece, in two pieces pier top purlin, the top and bottom of piece are attached using stull that load connects, And bearing diagonal is arranged between stull, triangle fixed structure is formed it into, so as to improve the stability of regulation section.
Preferably, the right-angled trapezium frame structure that pier top purlin piece is formed by connecting for section bar, pier top purlin piece compared with Vertical pillars are additionally provided with the summit on short base, the vertical pillars are vertically connected to the base more long of pier top purlin piece, described to hang down Horizontal horizontal bar is also respectively provided with right cylinder, the horizontal horizontal bar is connected to the both sides of pier top purlin piece.
Pier top purlin piece is arranged as right-angled trapezium frame structure, when support is in work progress, the bottom more long of pier top purlin piece While being arranged in upper end, after pier top purlin piece is constituted pier top sections, upper end has bigger mounting plane, and mould is poured for installing Plate.Vertical pillars and horizontal horizontal bar are set, the structural stability of pier top purlin piece can be strengthened, larger load can be born, be The further structural stability for improving pier top purlin piece, is additionally provided with many braces, including be arranged in vertical on the purlin piece of top First brace and the second brace at column two ends, respectively the two-end-point with pier top purlin piece right-angle side be connected, also including arrangement The 3rd brace on the piece hypotenuse of pier top purlin, the other end of the 3rd brace is connected to the friendship of vertical pillars and base more long At fork.
Preferably, the upper end of the regulation section, the two ends of multiple cube frame structures of composition standard sections and pier top The lower end of sections is arranged with and be provided with for by each section of integral connecting plate of connection, being arranged between the support of Liang Dun both sides Multiple is connected by screw bolts for the connecting bracket that two side stands link into an integrated entity between the connecting plate, the connection branch For detachable is connected between frame and support.
Connecting plate is set in the end of regulation section, standard sections and pier top sections respectively, by opening up spiral shell on connecting plate Pit, and be attached using high-strength bolt, regulation section, standard sections and pier top sections is formed monolithic stability formula structure, respectively Purlin piece connects with corresponding rear load and be also adopted by between being high-strength bolt connection, and the side stand of beam pier two is also adopted by high-strength with connecting bracket Bolt connection, the high-strength bolt refers to the bolt that performance rate is more than 8.8, takes this mode, it is ensured that each part it Between be connected firmly, the bolt failure caused by moment of torsion is excessive is prevented effectively from, using can between connecting plate, between connecting bracket and support The mode of split-type connection, is easy to the dismounting of each part, after the completion of the cast-in-place segmental construction of pier top, can rapidly dismantle and throw again During entering the cast-in-place segmental construction of next pier top.
Connecting bracket includes two horizontal crossbearers of parallel arrangement, in order to strengthen the structural stability of connecting bracket, in water Reinforcement diagonal brace is provided between flat crossbearer, connecting bracket is internally formed the triangular structures of multiple stabilizations, horizontal crossbearer and plus It is attached using welding manner between strong diagonal brace, forms the connection mounting structure of stabilization, the connecting bracket two ends is provided with similar In the attachment structure of mounting hole, connecting bracket is connected with the support of Liang Dun both sides by attachment structure, form overall support System, for Operation on pier top.
It is corresponding, present invention also offers a kind of installation of the strutting system of the cast-in-place segmental construction of Precast Concrete Segmental Bridges pier top Method, comprises the following steps:
A, bury on cushion cap top surface for connecting and support bracket fastened built-in fitting;
B, in assembled regulation section, standard sections and pier top sections respectively outside the venue, system will be connected after regulation purlin piece and regulation section assembled Into regulation section, it is to be assembled into cube frame structure that load after standard purlin piece and standard sections is connect, then by multiple cube frames Frame structure is assembled into standard sections, and it is to be assembled into pier top sections that load after pier top purlin piece and pier top sections is connect;
C, draw support and place and line and calculate scaffolding height;
D, laying bracket;
Each sections of e, hoisting bracket, installs regulation section, standard sections and pier top sections, and each sections is connected successively;
F, installation connecting bracket.
Aforesaid way is taken, using existing cushion cap top surface for support sets up support, is removed backfilling of earthwork compacting from and is hardened, and And carrying reliability is improved, reduce construction safety quality risk.Built-in fitting is buried in cushion cap top surface, leads to the support of Liang Dun both sides Cross built-in fitting and be fixed on cushion cap top surface, make support that there is preferable stability, when support is set up, assembled regulation respectively first Section, standard sections and pier top sections, then each sections of hoisting bracket successively, carry out at the scene part peace one by one so as to avoid Dress, improves efficiency of construction, so as to accelerate the progress of whole engineering construction.And assembly is carried out to each sections at the scene, Simple, convenient, difficulty of construction is smaller.
Compared with prior art, beneficial effects of the present invention:
1st, using the strutting system of the cast-in-place segmental construction of Precast Concrete Segmental Bridges pier top, taken to rely on using existing cushion cap top surface If support, solve prior art and set up asking for support by the way of backfilling of earthwork the need for existing for raft support method Topic, and raft support method is after backfilling of earthwork, in addition it is also necessary to the soil body is compacted and is hardened, work progress is more complicated, applied The work duration is long, and construction cost is high, simultaneously as the mode of this backfilling of earthwork is present not, and fully compacting or hardness are inadequate Problem, is susceptible to construction safety accident, and by the way of strutting system is ridden upon into cushion cap top surface, can effectively improve carrying Reliability, reduces construction safety quality risk, and short construction period, can save larger construction cost;
2nd, in advance in cushion cap top surface bury built-in fitting, regulation section bottom set firm banking, by firm banking with it is pre- The connection of embedded part, makes support be fixedly secured on cushion cap top surface, is prevented effectively from support and is asked in cushion cap top surface generation slip, mobile etc. Topic, makes support have stronger stability, it is ensured that the firm reliability of strutting system;
3rd, each sections of the strutting system be respectively adopted purlin piece and rear load to connect be to carry out detachable connection, while regulation Section, standard sections and pier top sections carry out detachable connection using connecting plate, make whole strutting system it is convenient to assemble and disassemble, safe, Fast, repeatedly can fall to use, and during reuse, it is not necessary to each sections is attached respectively again, it is only necessary to will be each Individual sections is attached, and construction period can be greatly shortened, and reduces construction cost;
4th, by being assembled into outside the venue single regulation section, standard sections and pier top sections, then at the scene to single regulation section(Cube Body frame structure), standard sections and pier top sections lifted, assembled connection, it is to avoid carrying out part one by one at the scene installs, Efficiency of construction is improve, the plenty of time has been saved, so as to accelerate the progress of whole engineering construction.
Brief description of the drawings:
Fig. 1 is the structural representation of the strutting system of the cast-in-place segmental construction of pier top of the present invention.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is partial enlarged drawing at A in Fig. 1.
Fig. 4 is partial enlarged drawing at B in Fig. 1.
Fig. 5 is partial enlarged drawing at C in Fig. 1.
Fig. 6 is partial enlarged drawing at D in Fig. 1.
Fig. 7 is the structural representation of the cube frame structure of composition standard sections.
Fig. 8 is the left view of Fig. 7.
Fig. 9 is partial enlarged drawing at E in Fig. 7.
Figure 10 is the structural representation of the pier top sections for constituting support.
Figure 11 is the left view of Figure 10.
Figure 12 is partial enlarged drawing at F in Figure 10.
Figure 13 is the structural representation of the regulation section for constituting support.
Figure 14 is the left view of Figure 13.
Figure 15 is partial enlarged drawing at G in Figure 13.
Figure 16 is the structural representation for the built-in fitting connected with firm banking.
Figure 17 is the sectional view of the H-H along Figure 16.
Figure 18 is the flow chart of the strutting system for installing the cast-in-place segmental construction of pier top of the present invention.
Marked in figure:1- standard sections, 2- regulation sections, 21- regulation purlin pieces, load connects and is after 22- regulation sections, 23- horizontal bars, 24- reinforcements, 3- pier top sections, 31- pier tops purlin piece, load connects and is after 32- pier top sections, 33- vertical pillars, and 34- levels are horizontal Muscle, 35- braces, the braces of 351- first, the braces of 352- second, the braces of 353- the 3rd, 4- firm bankings, 5- cubes Frame structure, 51- standards purlin piece, load connects and is after 52- standard sections, and 53- stulls, 54- bearing diagonals, 55- steel pipes, 56- is diagonal Muscle, 57- channel-section steels, 6- connecting plates, 7- connecting brackets, the horizontal crossbearers of 71-, 72- strengthens diagonal brace, 8- mounting seats, 9- crab-bolts, 10- Cushion cap.
Specific embodiment
With reference to test example and specific embodiment, the present invention is described in further detail.But this should not be understood For the scope of above-mentioned theme of the invention is only limitted to following embodiment, all technologies realized based on present invention belong to this The scope of invention.
Embodiment
As depicted in figs. 1 and 2, the strutting system of the cast-in-place segmental construction of pier top, including be respectively arranged in the branch of Liang Dun both sides Frame, support described in both sides is used to be fixed on cushion cap top surface, and the support includes standard sections 1 and the tune for adjusting support height Sections 2, the standard sections 1 is assembled in the top of regulation section 2, and the support also includes the pier top sections 3 for setting up template, The pier top sections 3 is assembled in the top of support.
Standard sections can also be assembled in the lower section of regulation section.
Using the strutting system of the cast-in-place segmental construction of Precast Concrete Segmental Bridges pier top, using existing cushion cap top surface for rely on come Support is set up, because cushion cap top surface is more smooth, and the weight of strutting system is born with enough intensity, take this branch Frame system can shorten construction period, and save larger construction cost.
In the prior art, if using raft support method, it is necessary to carry out backfilling of earthwork, then on the basis of the earthwork of backfill Set up support.Therefore, backfilling of earthwork needs to be compacted the soil body and hardened, and work progress is more complicated, and the construction period compares It is long and uneconomical, simultaneously as the mode of this backfilling of earthwork has that fully compacting or hardness is not inadequate, easily Generation construction safety accident, and by the way of strutting system is ridden upon into cushion cap top surface, carrying reliability can be effectively improved, have Effect reduces construction safety quality risk.
Additionally, raft support method needs to use substantial amounts of falsework to set up piece by piece, need to remove piece by piece when the later stage uses Repeat and set up, tedious process is complicated, high cost, and uses the stake body of the cast-in-place segmental construction of pier top of the present embodiment System, it is only necessary to using assembled regulation section, standard sections and pier top section respectively, when the later stage is reused, direct-assembling three first Individual sections can be assembled into the strutting system of completion, and operation is simple and convenient to operate, short construction period, and cost is extremely low, has Preferable economic worth and promotional value.
Regulation section is set, for solving the adaptation issues of support height, due to the pier top and cushion cap of each steel structure bridge bridge pier The distance between top surface is differed, when support is set up, it is necessary to highly select suitable support according to pier top to be poured Highly.Regulation section can adjust the height of support, the strutting system is reused, and during reuse, only need basis to wait to pour Pier top highly select proper height regulation section.
, from lower from being above sequentially connected, regulation section 2 is located at pedestal lower end, and institute for regulation section 2, standard sections 1 and pier top sections 3 The bottom for stating regulation section 2 is provided with firm banking 4, and the firm banking 4 is used to be connected with the built-in fitting in cushion cap top surface, will adjust Sections 2 is arranged in the lower end position of support, installation and removal is all more facilitated, because two supports for constituting strutting system exist When using for the first time, the independent assembly of regulation section 2, standard sections 1 and pier top sections 3 is first respectively completed outside the venue, then again by this Three sections of integral assemblings are used into complete support, and regulation section 2 is arranged in into pedestal lower end, during follow-up use, are only needed The regulation section of height adaptation is pulled down and be replaced by, integral hoisting can be carried out to standard sections and pier top sections, reduction is torn open The workload unloaded and install, improves construction speed and efficiency.
As shown in Figure 1, Figure 2, shown in Fig. 5, Figure 16 and Figure 17, built-in fitting is buried in the top surface of cushion cap 10 in advance, built-in fitting is adopted With crab-bolt 9, while after arranging that mounting seat 8, crab-bolt 9 are embedded in cushion cap 10 on cushion cap top surface, through mounting seat 8, often Multiple crab-bolts 9 are disposed with individual mounting seat 8, in mounting bracket system, the bottom of support are arranged in section will be adjusted, and Firm banking 4 is set in bottom, by the connection of firm banking 4 and crab-bolt 9, support is fixedly secured on cushion cap top surface, have Effect avoids support the problems such as cushion cap top surface occurs slip, movement, it is ensured that the firm reliability of strutting system.
As shown in Figure 7, Figure 8 and Figure 9, standard sections 1 is by the assembly of multiple in the vertical directions of cube frame structure 5 Into the cube frame structure 5 includes multiple standard purlin pieces 51 being parallel to each other and the standard for connecting standard purlin piece 51 It is 52 that load connects after sections, standard purlin piece 51 be rectangular frame structure, after the standard sections load connect be 52 include horizontal cloth The stull 53 put and the diagonal bearing diagonal 54 of connection stull 53, it is 51 and the detachable of standard purlin piece 51 that load connects after standard sections Connection.
Standard sections constitutes the major part of support, constitutes the structure type of each cube frame structure of standard sections It is identical, highly selected appropriate number of cube frame structure to carry out assembly according to pier top, this structure type is taken, can be pre- Assembly first is carried out to cube frame structure, when constructing at the scene, it is only necessary to according to actual height to cube frame structure Quantity is increased and decreased, and each cube frame structure includes multiple purlin pieces being parallel to each other, and standard knot is used between multiple purlin pieces It is to carry out detachable connection that load connects after section, constitutes cube frame structure, is conveniently installed and is supported, and dismounting It is more convenient, stull and bearing diagonal are set, the stability of cube frame structure can be increased.
Standard purlin piece 51 is arranged in conplane steel pipe 55, four end to end formation squares of the steel pipe 55 including four Shape frame structure, there also is provided diagonal muscle 56 on the diagonal of rectangular frame structure, standard purlin piece is rectangular frame structure, is had Unstability, sets diagonal muscle on the diagonal, the rectangular frame structure is had multiple triangular structure groups with stability Into, a rectangular configuration for stabilization is constituted, form cube frame structure for assembly.Method of four steel pipes 55 using welding Weld together, diagonal muscle 56 also by welding mode weld together with steel pipe 55, standard purlin piece 51 when in use, wherein Two steel pipes 55 arrange, perpendicular to horizontal plane, have two steel pipes 55 horizontally disposed vertically, are connected to two steel pipes of vertical arrangement 55 end, the diameter of two more horizontally disposed steel pipes 55 of the diameter of two steel pipes 55 of arrangement is bigger vertically, vertically arrangement The two ends of two steel pipes 55 be respectively arranged with connecting plate 6, including horizontally disposed connecting plate and the connecting plate of arrangement vertically are erected The connecting plate of straight arrangement is four, is symmetrically arranged within one week along outer wall of steel pipe.In vertically arranged connecting plate, one of which pair , parallel to the rectangular frame face of standard purlin piece, the plate face of the symmetrical connecting plate of another set is perpendicular to mark for the plate face of the connecting plate of title Quasi- purlin piece rectangular frame face, opens respectively in horizontally disposed connecting plate and on the connecting plate in standard purlin piece rectangular frame face Connecting hole is provided with, the connection that the connecting hole on horizontally disposed connecting plate is used between upper and lower two cube frame structures is more After individual cube frame structure connects into standard sections, the connecting plate at the standard sections two ends is respectively used to and adjusts section, pier top Sections is connected(Now standard sections is arranged in mid-stent, when standard sections is arranged in frame bottom, standard sections two ends water The connecting plate that plain cloth is put is connected with firm banking, regulation section respectively).Because the part inside the piece of standard purlin is by being welded to connect , so plate face on the connecting plate in standard purlin piece rectangular frame face parallel to not opening up connecting hole, and plate face is perpendicular to standard purlin Connecting hole is offered on the connecting plate in piece rectangular frame face, it is by adjacent two pieces by the connecting hole to connect load after standard sections Standard purlin piece is coupled together, and takes this mode, can be dismantled by support minimum Component units of standard purlin piece.
As shown in Figure 1, Figure 2, shown in Fig. 5, Figure 13, Figure 14 and Figure 15, regulation section 2 includes multiple regulation purlin pieces 21 being parallel to each other It is 22 with being connect for load after the regulation section for connecting regulation purlin piece 21, regulation purlin piece 21 is rectangular frame structure, is filled after regulation section Connection be 22 include many horizontally disposed stulls 53 and many bearing diagonals 54 for connecting stull 53, stull 53 with regulation purlin The detachable of piece 21 is connected, and it is 22 to be used to connect adjacent two pieces regulation purlin piece 21 that load connects after regulation section, and purlin piece is adjusted in two pieces 21 top and bottom are attached using stull 53, and bearing diagonal 54 is arranged between stull 53, are formed it into triangle and are fixed Structure, so as to improve the stability of regulation section.
Regulation purlin piece 21 is arranged in conplane steel pipe 55 including two, and two steel pipes 55 are parallel to each other, two The two ends of the steel pipe 55 correspond to concordant and are connected with horizontal bar 23 respectively, and reinforcement 24 is also associated between two horizontal bars 23, should The both sides of reinforcement 24 are also respectively provided with diagonal muscle 56, because regulation section is arranged in the bottom of support, it is necessary to bear whole branch The weight of frame is, it is necessary to increase the reinforcement of regulation purlin piece and the arrangement density of diagonal muscle, steel pipe and horizontal bar constitute rectangular frame knot The rectangular frame structure is separated into two rectangular frame structures by structure, reinforcement, on the diagonal of each rectangular frame structure Diagonal muscle is provided with, horizontal bar is arranged in the frame structure of regulation purlin piece, and arrange reinforcement simultaneously, can effectively strengthen regulation purlin Piece bears the ability of load so that after purlin piece composition regulation section is adjusted, with more stable structure, can carry whole support Weight.
Two steel pipes 55 for adjusting section arrange that the two ends of steel pipe 55 are respectively arranged with connecting plate 6, including horizontally disposed vertically Connecting plate and vertically arrangement connecting plate, vertically arrangement connecting plate be four, symmetrically arranged within one week along outer wall of steel pipe. In vertically arranged connecting plate, the plate face of the symmetrical connecting plate of one of which parallel to regulation purlin piece rectangular frame face, in addition One group of plate face of symmetrical connecting plate perpendicular to regulation purlin piece rectangular frame face, in horizontally disposed connecting plate and perpendicular to regulation Connecting hole is offered on the connecting plate in purlin piece rectangular frame face respectively, the connecting hole on horizontally disposed connecting plate is used for and standard Sections, firm banking connection(Now regulation section is arranged in frame bottom, when regulation section is arranged in mid-stent, adjusts section two The horizontally disposed connecting plate in end is connected with standard sections, pier top sections respectively).Because the part inside regulation purlin piece is by weldering Connect in succession, so plate face on the connecting plate in regulation purlin piece rectangular frame face parallel to not opening up connecting hole, and plate face perpendicular to Adjust purlin piece rectangular frame face connecting plate on offer connecting hole, make regulation section after load connect be will be adjacent by the connecting hole Two pieces regulation purlin piece couples together the integrally-regulated segment structure of composition, and stull 53 and bearing diagonal 54 are by being opened on connecting plate 6 Connecting hole be connected with the regulation purlin piece 21 at two ends respectively, take this mode, conveniently exchange sections and dismantled and installed, carry Height dismounting and the efficiency installed, save the duration.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 6, Figure 10, Figure 11 and Figure 12, pier top sections 3 includes what multiple was parallel to each other Pier top purlin piece 31 and to be connect for load after the pier top sections for connecting pier top purlin piece 31 be 32, pier top purlin piece 31 is inverted right angle ladder Shape frame structure, it is 32 to be respectively arranged in the top and bottom two ends of pier top purlin piece 31 that load connects after pier top sections, often holds described After pier top sections load connect be 32 include horizontally disposed stull 53 and the bearing diagonal 54 for connecting stull 53, the pier top section Section after load connect be between 32 and pier top purlin piece 31 detachable connection, after pier top sections load connect be 32 be used for connect adjacent two Part pier top purlin piece 31, in two pieces pier top purlin, the top and bottom of piece 31 are attached using stull 53, and the cloth between stull 53 Bearing diagonal 54 is put, triangle fixed structure is formed it into, so as to improve the stability of regulation section.
The right-angled trapezium frame structure that pier top purlin piece 31 is formed by connecting for section bar, including as right-angled trapezium frame structure The steel pipe 55 of side and as upper bottom steel pipe 55, channel-section steel 57, is additionally provided with the summit on the shorter base of pier top purlin piece 31 Vertical pillars 33, the vertical pillars 33 are vertically connected to the base more long of pier top purlin piece 31, also distinguish in the vertical pillars 33 Horizontal horizontal bar 34 is provided with, the horizontal horizontal bar 34 is connected on two side steel pipes 55 of pier top purlin piece 31.
Pier top purlin piece 31 is arranged as right-angled trapezium frame structure, when support is in work progress, pier top purlin piece 31 compared with Base long is arranged in upper end, and after pier top purlin piece 31 is constituted pier top sections, upper end has bigger mounting plane, for installing Formwork for placing, set vertical pillars 33 and horizontal horizontal bar 34, the structural stability of pier top purlin piece 31 can be strengthened, can bear compared with Big load, in order to further improve the structural stability of pier top purlin piece 31, is additionally provided with many oblique pulls on pier top purlin piece 31 Muscle 35, including first brace 351 and the second brace 352 at vertical pillars two ends are arranged in, it is straight with pier top purlin piece 31 respectively The two-end-point connection of the arm of angle, also including the 3rd brace 353 being arranged on the piece hypotenuse of pier top purlin, the 3rd brace 353 The other end is connected to the infall of vertical pillars 33 and base more long, right-angled trapezium frame structure is formed multiple triangle fixed knots Structure.
In pier top purlin, the two ends of two steel pipes 55 of the oblique side of piece and right angle side are respectively arranged with connecting plate 6, including Horizontally disposed connecting plate and the vertically connecting plate of arrangement, the connecting plate of arrangement is four vertically, along outer wall of steel pipe one week uniformly It is arranged symmetrically.In vertically arranged connecting plate, the rectangle frame of the plate face of the symmetrical connecting plate of one of which parallel to pier top purlin piece Frame face, the plate face of the symmetrical connecting plate of another set perpendicular to pier top purlin piece rectangular frame face, in horizontally disposed connecting plate and Offer connecting hole, the connecting hole on horizontally disposed connecting plate respectively on the connecting plate in pier top purlin piece rectangular frame face For being connected with standard sections or regulation section, the horizontally disposed connecting plate in pier top purlin piece upper end is connected with mould.Due to pier top purlin Part inside piece is by being welded to connect, so plate face on the connecting plate in pier top purlin piece rectangular frame face parallel to not opening up Connecting hole, and plate face offers connecting hole on the connecting plate in pier top purlin piece rectangular frame face, makes load after pier top sections It is to be coupled together adjacent two pieces pier top purlin piece by the connecting hole to connect, and constitutes overall pier top bay structural, tiltedly stull 53 and branch Support 54 is connected with the pier top purlin piece 31 at two ends respectively by the connecting hole being opened on connecting plate 6, this mode is taken, to pier Epimerite section is very convenient when being dismantled and being installed, and improves dismounting and the efficiency installed, and saves the duration.
It is shown as shown in Figure 1, Figure 3 and Figure 4, the upper end that adjusts section 2, multiple cube frame structures 5 for constituting standard sections 1 The lower end of two ends and pier top sections 3 is arranged with for by the integral connecting plate of each section of connection, being arranged in the branch of Liang Dun both sides Multiple connecting brackets 7 for two side stands to be linked into an integrated entity are provided between frame, are connected using bolt between the connecting plate Connect, for detachable is connected between the connecting bracket 7 and support.
Connecting plate is set in the end of regulation section, standard sections and pier top sections respectively, by opening up spiral shell on connecting plate Pit, and be attached using high-strength bolt, regulation section, standard sections and pier top sections is formed monolithic stability formula structure, respectively Purlin piece connects with corresponding rear load and be also adopted by between being high-strength bolt connection, and the side stand of beam pier two is also adopted by high-strength with connecting bracket Bolt connection, the high-strength bolt refers to the bolt that performance rate is more than 8.8, takes this mode, it is ensured that each part it Between be connected firmly, the bolt failure caused by moment of torsion is excessive is prevented effectively from, using can between connecting plate, between connecting bracket and support The mode of split-type connection, is easy to the dismounting of each part, after the completion of the cast-in-place segmental construction of pier top, can rapidly dismantle and throw again During entering the cast-in-place segmental construction of next pier top.
Connecting bracket 7 includes two horizontal crossbearers 71 of parallel arrangement, in order to strengthen the structural stability of connecting bracket, Reinforcement diagonal brace 72 is provided between horizontal crossbearer, connecting bracket 7 is internally formed the triangular structure of multiple stabilizations, horizontal crossbearer It is attached using welding manner between 71 and reinforcement diagonal brace 72, forms the connection mounting structure of stabilization, the two ends of connecting bracket 7 The attachment structure being provided with(Such as use mounting hole), connecting bracket 7 is connected with the support of Liang Dun both sides by attachment structure, formed Overall strutting system, for Operation on pier top, in the present embodiment, is symmetrical set two connections in pier top sections 3 respectively Support 7, while being symmetrically set with two connecting brackets 7 on standard sections 1, is being provided with the position of connecting bracket 7, pier Connecting hole is offered on the purlin piece upper junction plate of top, makes connecting bracket realize installing and fixed by connecting hole, similarly, standard purlin Connecting hole is also offered on connecting plate on piece, for the fixation and installation of connecting bracket.
The installation method of the strutting system of the cast-in-place segmental construction of Precast Concrete Segmental Bridges pier top, as shown in figure 18, including it is following Step:
A, bury on cushion cap top surface for connecting and support bracket fastened built-in fitting;
B, in assembled regulation section, standard sections and pier top sections respectively outside the venue, system will be connected after regulation purlin piece and regulation section assembled Into regulation section, it is to be assembled into cube frame structure that load after standard purlin piece and standard sections is connect, then by multiple cube frames Frame structure is assembled into standard sections, and it is to be assembled into pier top sections that load after pier top purlin piece and pier top sections is connect;
C, draw support by built-in fitting position in cushion cap top surface and place line, and calculate scaffolding height, select the tune of proper height Sections is installed, it is ensured that firm banking is connected firmly with built-in fitting;
D, line laying bracket is placed according to the support that draws, make firm banking and cushion cap top surface directly contact;
Each sections of e, hoisting bracket, installs regulation section, standard sections and pier top sections, and each sections is connected successively;
After f, support installation, connecting bracket is installed.
Aforesaid way is taken, using existing cushion cap top surface for support sets up support, is removed backfilling of earthwork compacting from and is hardened, and And carrying reliability is improved, reduce construction safety quality risk.Built-in fitting is buried on cushion cap top surface is used for built-in fitting, makes Liang Dun The support of both sides is fixed on cushion cap top surface by built-in fitting, makes support have preferable stability, when support is set up, divide first Not assembled regulation section, standard sections and pier top sections, then each sections of hoisting bracket successively, are carried out at the scene so as to avoid Part is installed one by one, efficiency of construction is improve, so as to accelerate the progress of whole engineering construction.And at the scene to each sections Assembly is carried out, simple, convenient, difficulty of construction is smaller.

Claims (10)

1. a kind of strutting system of the cast-in-place segmental construction of Precast Concrete Segmental Bridges pier top, it is characterised in that including being respectively arranged in beam The support of pier both sides, support described in both sides is used to be fixed on cushion cap top surface, and the support includes standard sections and for adjusting branch The regulation section of frame height, the standard sections is assembled in the top of regulation section, and the support also includes the pier for setting up template Epimerite section, the pier top section assembling is in the top of support.
2. the strutting system of the cast-in-place segmental construction of Precast Concrete Segmental Bridges pier top according to claim 1, it is characterised in that institute From being above sequentially connected, regulation section is located at pedestal lower end from lower to state regulation section, standard sections and pier top sections, and the section that adjusts Bottom is provided with firm banking, and the firm banking is used for and the built-in fitting connection in cushion cap top surface.
3. the strutting system of the cast-in-place segmental construction of Precast Concrete Segmental Bridges pier top according to claim 2, it is characterised in that institute State standard sections assembled by multiple cube frame structure in the vertical directions, the cube frame structure includes multiple The standard purlin piece that is parallel to each other and to be connect for load after the standard sections for connecting standard purlin piece be that standard purlin piece is rectangle frame Frame structure, it is including horizontally disposed stull and the diagonal bearing diagonal of connection stull, the mark that load connects after the standard sections It is to be connected with standard purlin piece detachable that load connects after quasi- sections.
4. the strutting system of the cast-in-place segmental construction of Precast Concrete Segmental Bridges pier top according to claim 3, it is characterised in that institute State standard purlin piece and be arranged in conplane steel pipe including four, four end to end formation rectangular frame structures of steel pipe, Diagonal muscle is there also is provided on the diagonal of the rectangular frame structure.
5. the strutting system of the cast-in-place segmental construction of Precast Concrete Segmental Bridges pier top according to claim 3, it is characterised in that institute State regulation section and include multiple regulation purlin pieces being parallel to each other and connect for load after the regulation section for connecting regulation purlin piece and be, the tune Section purlin piece is rectangular frame structure, and it is including horizontally disposed many stulls and for connecting stull that load connects after regulation section Many bearing diagonals, the stull with regulation purlin piece detachable be connected.
6. the strutting system of the cast-in-place segmental construction of Precast Concrete Segmental Bridges pier top according to claim 5, it is characterised in that institute State regulation purlin piece and be arranged in conplane steel pipe including two, two steel pipes are parallel to each other, two the two of the steel pipe End corresponds to concordant and is connected with horizontal bar respectively, and reinforcement is also associated between two horizontal bars, and the reinforcement both sides are also respectively provided with There is diagonal muscle.
7. the strutting system of the cast-in-place segmental construction of Precast Concrete Segmental Bridges pier top according to claim 3, it is characterised in that institute State pier top sections and include multiple pier top purlin pieces being parallel to each other and connect for load after the pier top sections for connecting pier top purlin piece and be, institute Pier top purlin piece is stated for inverted right-angled trapezium frame structure, after pier top sections load connect be respectively arranged in pier top purlin piece top and Bottom two ends, it is bearing diagonal including horizontally disposed stull and for connecting stull often to hold load after the pier top sections to connect, It is that detachable is connected between the piece of pier top purlin that load connects after the pier top sections.
8. the strutting system of the cast-in-place segmental construction of Precast Concrete Segmental Bridges pier top according to claim 7, it is characterised in that institute The right-angled trapezium frame structure that pier top purlin piece is formed by connecting for section bar is stated, is also set on the summit on the shorter base of pier top purlin piece Vertical pillars are equipped with, the vertical pillars are vertically connected to the base more long of pier top purlin piece, are also respectively provided with the vertical pillars There is horizontal horizontal bar, the horizontal horizontal bar is connected to the both sides of pier top purlin piece.
9. the strutting system of the cast-in-place segmental construction of Precast Concrete Segmental Bridges pier top according to claim 3, it is characterised in that institute The upper end for stating regulation section, the two ends of multiple cube frame structures and the lower end of pier top sections that constitute standard sections are arranged with Multiple being used for two side stands is provided with for by the integral connecting plate of each section of connection, being arranged between the support of Liang Dun both sides The connecting bracket for linking into an integrated entity, is connected by screw bolts between the connecting plate, is removable between the connecting bracket and support Fraction is connected.
10. a kind of installation method of the strutting system of the cast-in-place segmental construction of Precast Concrete Segmental Bridges pier top, it is characterised in that install such as The method of the strutting system of one of the claim 3-9 described cast-in-place segmental construction of Precast Concrete Segmental Bridges pier top, including following step Suddenly:
A, bury on cushion cap top surface for connecting and support bracket fastened built-in fitting;
B, in assembled regulation section, standard sections and pier top sections respectively outside the venue, system will be connected after regulation purlin piece and regulation section assembled Into regulation section, it is to be assembled into cube frame structure that load after standard purlin piece and standard sections is connect, then by multiple cube frames Frame structure is assembled into standard sections, and it is to be assembled into pier top sections that load after pier top purlin piece and pier top sections is connect;
C, draw support and place and line and calculate scaffolding height;
D, laying bracket;
Each sections of e, hoisting bracket, installs regulation section, standard sections and pier top sections, and each sections is connected successively;
F, installation connecting bracket.
CN201611227416.2A 2016-12-27 2016-12-27 A kind of strutting system and its installation method of the cast-in-place segmental construction of pier top Pending CN106758839A (en)

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Publication number Priority date Publication date Assignee Title
CN108981590A (en) * 2018-06-13 2018-12-11 中铁隧道集团二处有限公司 A kind of high-speed rail precast beam positioning system
CN110735399A (en) * 2019-10-11 2020-01-31 贵州桥梁建设集团有限责任公司 installation method of cast-in-situ support beam system capable of automatically rising or falling

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JP2014105483A (en) * 2012-11-27 2014-06-09 Mitsubishi Heavy Industries Bridge & Steel Structures Engineering Co Ltd Bridge erection apparatus and bridge erection method
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JPH09195228A (en) * 1996-01-17 1997-07-29 Kawatetsu Kizai Kogyo Kk Build-up trestle for bridge pier reinforcing work and its using method
CN102995561A (en) * 2011-09-19 2013-03-27 曹新恒 Universal bridge cast-in-place support
CN102367653A (en) * 2011-12-02 2012-03-07 中铁五局(集团)有限公司 Support structure for large-span continuous beam construction
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CN108981590A (en) * 2018-06-13 2018-12-11 中铁隧道集团二处有限公司 A kind of high-speed rail precast beam positioning system
CN108981590B (en) * 2018-06-13 2020-10-23 中铁隧道集团二处有限公司 High-speed railway precast beam positioning system
CN110735399A (en) * 2019-10-11 2020-01-31 贵州桥梁建设集团有限责任公司 installation method of cast-in-situ support beam system capable of automatically rising or falling
CN110735399B (en) * 2019-10-11 2021-03-23 贵州桥梁建设集团有限责任公司 Installation method of cast-in-place support beam system capable of automatically rising or falling

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